SWT - custom widget development - how to double buffer?

["Ozgur Kurt" <ozgurkurt@xxxxxxxxxxx>]

hi all,


I'm developing a custom widget extending canvas. I have void
paintControl(PaintEvent e) method, and in the method, i first create and
offscreen image

    Rectangle rClient = getClientArea();
    Image off = new Image(getDisplay(), rClient.width, rClient.height);
    GC gc = new GC(off);

then, draw on this gc, and copy it back to paintevent.gc

    e.gc.drawImage(off, 0, 0);
    gc.dispose();
    off.dispose();

problem is, this drawImage method is too slow, still client area is
flickering. is there a better way to do that?

thanx,
ozgur